It’s worth arriving at a UN climate summit tooled up with stats: you never know who you might meet on the bus.

Below is a selection of some of the year’s best studies on the green economy, climate finance flows, record temperatures and cooling interest in coal.

They illustrate reasons to be happy (carbon intensity is falling), worried (the oceans are heating up), amazed (half million solar panels were plugged in every day last year) and sad (300 million kids breathe in toxic fumes every year).

8. World Bank: 40 national jurisdictions and over 20 cities, states, and regions are putting a price on carbon. That’s the good news. Prices remain low, much depends on China’s 2017 market launch (Report)

11. Bloomberg: 62 million households in India lack access to the electricity grid. But with a 92% growth rate, rooftop solar is becoming an affordable answer (Report)

Electrification rate across various Indian states (Source: Census 2011 and Bloomberg New Energy Finance)

12. IUCN: “Ocean warming may well turn out to be the greatest hidden challenge of our generation.” More than 93% of extra warming due to greenhouse gases has been absorbed by the oceans, at all depths (Report)